Enabling the IPv6 package on a MikroTik device is a process that involves ensuring that the necessary software package is installed and enabled on the MikroTik RouterOS system. Below I'll walk you through the general steps to do so, based on the stable version of RouterOS. Please note that these steps may vary slightly depending on the specific version of RouterOS you are using.

Check RouterOS Version

First, it's important to make sure you're running a version of RouterOS that supports IPv6. You can check this and update your RouterOS if necessary through the “System” > “Packages” > “Check for updates” menu.

Access MikroTik Router

Log in to your MikroTik device via WinBox, WebFig, or SSH, depending on your preference.

Check if the IPv6 Package is Installed

Go to “System” > “Packages”.

Look in the list for a package called “ipv6.” If it is already listed and marked as “enabled,” then IPv6 is already active on your device.

If the “ipv6” package is present but not enabled, you can enable it by right-clicking on it and selecting “Enable.”

Install IPv6 Package (if necessary)

If the “ipv6” package is not listed, you will need to download and install it manually.

Visit the MikroTik website and download the appropriate version of the “ipv6” package for your RouterOS version and device model.

Upload the package to your router via FTP, WinBox, or WebFig.

Once uploaded, go again to “System” > “Packages”, find the uploaded “ipv6” package, right click on it and select “Reboot”.

Your router will reboot to apply the change.

Additional IPv6 Configuration

After enabling the IPv6 packet, you may need to perform additional configurations depending on your network, such as adjusting interfaces, assigning IPv6 addresses, configuring the firewall for IPv6, etc.

Verify IPv6 Functionality

Once you have completed the desired configuration, verify IPv6 functionality by ensuring that your devices can obtain IPv6 addresses and access IPv6 resources on the Internet.

Remember that enabling IPv6 on your network not only involves enabling the packet on the router, but also ensuring that the entire network, including end devices and other network equipment, are correctly configured to use IPv6. This may include settings in DHCP for IPv6, firewall, routing policies, and more.